I have a kenmore dryer series 90. When I set timer to dry for 60 minutes (any time for that matter) it runs the full 60 minutes but does not turn off. It will just keep running and running. The knob that is supposed to show the timer decreasing in remaining time left does not move at all. What is wrong and how do I fix it. I already looked in parts list and there is no mention of timers. Please help with this problem, My clothes are getting too tight to wear!..... thanks

The knob that is supposed to show the timer decreasing in remaining time left does not move at all.

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If the timer knob does not move at all and just stays where ever you set it.....usually this indicates a bad timer.

If you have a volt meter, *carefully* check for power ( usually 110-120 volts AC ) to the timer motor ( 2 small black wires ) with the dryer running in the timed dry mode.....power there and no movement/advancing = new timer time.